Tool.



H. M. KAUFFMAN.

TOOL.

APPLICATION FILED FEB-3. 1917.

1,284,906. Patented July 31, 1917.

HARRY M. KAUFFMAN, OF PHILADELPHIA, PENNSYLVANIA, ASSIG-NOR TO FRANK PRICE, OF PHILADELPHIA, PENNSYLVANIA.

TOOL.

Specification of Letters Patent.

Patented July 31, 1917.

Application filed February 3, 1917. Serial No. 146,335.

Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in,

Tools, of which the following is a specification.

My invention consists of an improved tool. One object of my invention is to provide a tool which will be particularly useful for electricians, plumbers, gas-pipe workmen and others, who install chainhung chandeliers, and lamps and who are often required to open and close chain links.

Another object is to so construct my improved tool that it can be used to remove the insulation from electric conduit wires and can also be employed to cut wire.

A further object is to make my invention in such manner that it can be used as a wrench for pipes or bars.

These objects, and other advantageous ends which will be described hereinafter, I attain in the following manner, reference being had to the accompanying drawings in which Figure 1 is a face View of my invention.

Fig. 2 is a perspective view of my inven tion showing how the same is employed to open or spread a chain link.

Fig. 3 is a perspective view of one of the sections of my invention.

Referring to the drawing, my invention consists primarily of two sections '1 and 2 and are pivoted together by a pivot bolt or pin 3. Since the sections 1 and 2 are exactly alike, it will be only necessary to describe one of said sections in detail.

Each of the sections has a handle 4: and a jaw 5. The handle l has a hole 6 extending entirely therethrough, and an annular recess 7 is formed on the inner surface of said handle as clearly shown in Fig. 3. This recess communicates with another recess 8 which is angularly disposed to the recess 7 and is for, the purpose of receiving one end of a torsion spring 9 when the sections are pivoted together (see Figs. 1 and 3).

The jaw 5 of each section 1s of greater width than the handle 4 adjacent to the pivot point of the sections, the extent of this difference in width being shown at 10 in Fig. 3, so that when the sections are joined together, the combined width of the sections adjacent to their pivot points is substantially equal to the width of one of the j aws,

it being noted that both jaws are movable in substantially the same plane.

'Each jaw 5 is provided with a finger 11 which is curved at its outer surface 12 and inner surface 13, said curve being substantially concentric with the axis of the pivot pin 3. The finger 11 of each section is narrower than the jaw from which itprojects, so that the fingers 11 of both sections over: lap and move in close proximity to each other when the sections are moved on their pivot.

Furthermore, each of the fingers 11 is arranged at the side of the jawfrom which it projects and each finger has a lip 14 which projects outwardly from the curved surface 12 and laterally to the extent of the width of the adjacent finger. Each of the lips 1% has its outermost surface concaved as shown at 15, said curvature being designed to substantially correspond to the curvature of the cross section of the link so as to hold the link in position when the lips are inserted Within the link and then spread apart by the inward movement of the handles 4c, such for example, as shown in Fig. 2. 1

also serve as scrapers for removing the in sulation from the wire as above noted.

The jaws 5 have recesses 18 and 19 of different depths and these recesses may be used to compress and close the spread links. The deeper recesses 18 accommodate larger links than the recesses 19. Other recesses 20 are formed in the jaws 5, and these latter recesses have ridges or teeth 21 designed to grip a pipe or other member which is in serted between them. The opposite ends of the coiled torsion spring 9 engage the ledges or walls formed by the recesses 8, so that said spring normally acts to keep the handles 4L separated and the lips 14 in contact with each other. 1

By moving the handles 4 together against the action of the spring 11, the lips 14 are separated and the knife edges 16 are moved toward the knife edges 17, and consequently the jaws 5 are moved toward each other, so that the same movement of the handles which act to spread a link, also can act to compress links which are inserted between handles 4 may be flattened and used as, screw-drivers It will thus be understood that my improved tool has a number of practical uses, and while it is particularly serviceable for electricians as above noted, it may also be used with advantage by any mechanic no matter what character his work may be.

' lVhile I have described my invention as taking a particular form, it will be under stood that the various parts of my invention may be changed without departing from the spirit thereof, and hence I do not limit myself to the precise construction set forth, but consider that I am at liberty to make such changes and alterations as fairly come within the scope of the appended movable past each other in opposite direc-V tions in parallel paths, and forwardly projecting lips on said end portions of the fingers, said lips being movable apart when the jaws are movable together, substantially as described; V

2, A tool including two similar relatively movable jaws having overlapping fingers, and forwardly projecting lips on said overlapping fingers, each of said lips having a portion projecting laterally across the plane in which the adjacent finger moves, said lips being movable apart when the jaws are moved together, substantially as described.

3. A tool including two similar relatively movable jaws having overlapping fingers, and lips on said overlapping fingers, each of said lips having a portion projecting lat erally across the plane in which the adjacent finger moves, said lips thus being designed; toabut each other and prevent the complete separation of V the jawsftheoppositely or disposed surfaces of'said lips being concavech substantially as describedg a. A tool having two relatively movablel jaws, said jaws including projecting fingers '55 V jaws from which they project, said fingers being movable in close proximity to and g 7 adapted to overlap each other, eachrof said 7 each'of less width than the portions of the fingers having a knife edge at its freeend,

each of said jaws having a knife edge pro jecting into the path of 'movement of the knife edge on the finger of the adjacent I jaw, substantially as described.

5. A tool comprising two sections pivoted together, each of said sections including a handleand a aw portion, and a fingerproe jecting from each jaw, saidfingers being of less width than the aws and movable 1n close proximity to each other, each of said fingers having an" outwardly extending lip, and sald lips having portions extended laterally 1n opposite directions across the path of movement of the adjacent finger, substantially' as described.

6. A tool erally across the plane in whiohthe adjacent finger movesysaid lips thus being adapted to posed surfaces of said lips being concaved,

including two similarrelativelv V movablefjaws having overlapping fingers,1 V and lips on saidVoverlappi'ngfingers eachv of said lips having a portionprojecting latand means for movingand normallyjhold ing said lips in engagement,substantially as described. 7

In testimony whereof I have signed 'my, i 7 name to this specification in the presence of Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. 0. r 

